Wrench



A. ERlKsoNl WRENCH Filed June ll, 1928 Inventor Patented Oct. 8, 1929 UNITED Sres P TENT; orricr;

WRENCH Application led .Tune 11,

This invention relates to an improved wrench, and more particularly to a struct-ure which is characterized by novel pawl and ratchet means for actuating individual socket wrenches.

Briefly described, the improved structure comprises a handle having a rotary ratchet at one end constructed to removably receive the shank of a socket wrench equipped with alternately operable spring pressed pawls tor cooperating with the ratchet and further cooperating with novel cam actuating means therefor.

In the drawings Figure 1 is a plan view with portion ot the handle broken away to uncover and expose the novel pawl and ratchet mechanism.

Fig. 2 is a side or edge elevation of the complete implement, showing the manner in which the socket wrench is arranged in position, for successive operation by the pawl and ratchet mechanism, or the handle, as desired.

Considering now, the drawings in detail, it will be observed that the reference character 3 designates generally the handle. As shown in side elevation this is composed of three parts 4, 5 and 6 respectively, the parts t and (3 being of the same length while the part 5 is comparatively short. Arranged between the spaced end portions of the parts 4 and 6 is a rotary ratchet wheel 7 having a central hub 8 to accommodate and receive the shank 9 of the socket wrench 10.`

Disposed in the same part in close proX- imity to the ratchet wheel is a guide block 11 with which the pawls 12 and 13 are in sliding contact. The pawl 13 has its ends 14 constructed for engagement with the teeth on one side ot the ratchet, and the pawl 12 has its ends 15 formed into a head to engage the teeth on the opposite side of the ratchet.'

A spring 16 is connected with the pawls to serve to hold them in yielding contact with the ratchet wheel and guide block 7. The inner ends of the pawls are disposed in overlapping relation and formed into ring-like portions 17. These surround an eccentric or cam 18 arranged upon the handle.

This cam also embodies a hub 19 having a 1928. Serial No. 284,417.

flat spaced opening for reception of the correspondingly shaped end portions of the removable hand crank 2() as shown in dotted lines in Fig. 2. Obviously, by placing this hand crank in the position shown, and turning it through a complete circle, the cam action will, through the medium of the ring-like poryion 17, impart reciprocatory motion to the pawls, so that they will turn the ratchet wheel in a step by step manner, and in turn operate the ratchet and operate the socket wrench.

In addition, the handle 3 can be bodily moved back and forth, while the ratchet is rocked by the pawl to impart turning movement to the wrench. Hence, the implement can be employed to impart full turn to the socket wrench by operating the socket wrench in a step by step manner. I The simplicity of constructionv of the tool is such as to permit a clear understanding of the invention, advantages and operation to b e had, after reading the description in connection with the drawings, for which reason, a more lengthy description is regarded unnecessary.

Minor changes in shape, size, and rearrangement parts, coming within the field ot invention claimed may be resorted to it desired.

Having thus described my invention, what I claim as new is An implement of the class described comprising a handle, a rotary ratchetwheel mounted between the parts or said handle, and including a hub constructed for removable reception ot the shank of a socket wrench, a guide block mounted on the handle adjacent the ratchet wheel, a rotary eccentric mounted on the handle, and spaced from the guide block and including a hub having an opening for removable reception inthe hand crank, a pair of spaced pawls having annular portions embracing the eccentrics said pawls having their outer end portions constructed for engagement with the teeth of the ratchet wheel, and a spring interconnecting said pawl, intermediate the eccentric and guide block.

In testimony whereof I affix my signature.

ANDERS ERIKSQN, 

